Title:
RESISTANCE SPOT WELDING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/045678
Kind Code:
A1
Abstract:
A method for performing resistance spot welding using an inverter DC welding machine on a sheet set obtained by overlapping two or more steel sheets, wherein: the method includes a preliminary electric-current conduction step, and a main electric-current conduction step performed by conducting a pulsed electric current; the current value of a secondary-side current in the main electric-current conduction step is set to 10 kA or less; an electric-current conduction time is set to 0.7 cycles or less with reference to 60 Hz; and a standby time is set to a time such that the secondary-side current descends to 3 kA or less.
Inventors:
MIURA TOMONOBU (JP)
OYAMA YOSHINORI (JP)
YANAGAWA TOMONORI (JP)
OYAMA YOSHINORI (JP)
YANAGAWA TOMONORI (JP)
Application Number:
PCT/JP2019/034368
Publication Date:
March 05, 2020
Filing Date:
September 02, 2019
Export Citation:
Assignee:
TOYOTA TEKKO KK (JP)
International Classes:
B23K11/11; B23K11/24
Foreign References:
| JP2008093726A | 2008-04-24 | |||
| JP2010207909A | 2010-09-24 | |||
| JP2010247215A | 2010-11-04 |
Attorney, Agent or Firm:
OKADA PATENT & TRADEMARK OFFICE, P. C. (JP)
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